print.c revision 61325 
1/*
2 * Copyright (c) 1989, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Michael Fischbein.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)print.c	8.4 (Berkeley) 4/17/94";
40#else
41static const char rcsid[] =
42  "$FreeBSD: head/bin/ls/print.c 61325 2000-06-06 07:32:20Z ache $";
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/stat.h>
48
49#include <err.h>
50#include <errno.h>
51#include <fts.h>
52#include <grp.h>
53#include <pwd.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <string.h>
57#include <time.h>
58#include <unistd.h>
59#ifdef COLORLS
60#include <ctype.h>
61#include <termcap.h>
62#include <signal.h>
63#endif
64
65#include "ls.h"
66#include "extern.h"
67
68static int	printaname __P((FTSENT *, u_long, u_long));
69static void	printlink __P((FTSENT *));
70static void	printtime __P((time_t));
71static int	printtype __P((u_int));
72#ifdef COLORLS
73static void     endcolor __P((int));
74static int      colortype __P((mode_t));
75#endif
76
77#define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
78
79#ifdef COLORLS
80/* Most of these are taken from <sys/stat.h> */
81typedef enum Colors {
82    C_DIR,     /* directory */
83    C_LNK,     /* symbolic link */
84    C_SOCK,    /* socket */
85    C_FIFO,    /* pipe */
86    C_EXEC,    /* executable */
87    C_BLK,     /* block special */
88    C_CHR,     /* character special */
89    C_SUID,    /* setuid executable */
90    C_SGID,    /* setgid executable */
91    C_WSDIR,   /* directory writeble to others, with sticky bit */
92    C_WDIR,    /* directory writeble to others, without sticky bit */
93    C_NUMCOLORS        /* just a place-holder */
94} Colors ;
95
96char *defcolors = "4x5x2x3x1x464301060203";
97
98static int colors[C_NUMCOLORS][2];
99#endif
100
101void
102printscol(dp)
103	DISPLAY *dp;
104{
105	FTSENT *p;
106
107	for (p = dp->list; p; p = p->fts_link) {
108		if (IS_NOPRINT(p))
109			continue;
110		(void)printaname(p, dp->s_inode, dp->s_block);
111		(void)putchar('\n');
112	}
113}
114
115void
116printlong(dp)
117	DISPLAY *dp;
118{
119	struct stat *sp;
120	FTSENT *p;
121	NAMES *np;
122	char buf[20];
123#ifdef COLORLS
124	int color_printed = 0;
125#endif
126
127	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
128		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
129
130	for (p = dp->list; p; p = p->fts_link) {
131		if (IS_NOPRINT(p))
132			continue;
133		sp = p->fts_statp;
134		if (f_inode)
135			(void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino);
136		if (f_size)
137			(void)printf("%*qd ",
138			    dp->s_block, howmany(sp->st_blocks, blocksize));
139		(void)strmode(sp->st_mode, buf);
140		np = p->fts_pointer;
141		(void)printf("%s %*u %-*s  %-*s  ", buf, dp->s_nlink,
142		    sp->st_nlink, dp->s_user, np->user, dp->s_group,
143		    np->group);
144		if (f_flags)
145			(void)printf("%-*s ", dp->s_flags, np->flags);
146		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
147			if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0)
148				(void)printf("%3d, 0x%08x ",
149				    major(sp->st_rdev),
150				    (u_int)minor(sp->st_rdev));
151			else
152				(void)printf("%3d, %3d ",
153				    major(sp->st_rdev), minor(sp->st_rdev));
154		else if (dp->bcfile)
155			(void)printf("%*s%*qd ",
156			    8 - dp->s_size, "", dp->s_size, sp->st_size);
157		else
158			(void)printf("%*qd ", dp->s_size, sp->st_size);
159		if (f_accesstime)
160			printtime(sp->st_atime);
161		else if (f_statustime)
162			printtime(sp->st_ctime);
163		else
164			printtime(sp->st_mtime);
165#ifdef COLORLS
166		if (f_color)
167			color_printed = colortype(sp->st_mode);
168#endif
169		if (f_octal || f_octal_escape) (void)prn_octal(p->fts_name);
170		else (void)printf("%s", p->fts_name);
171#ifdef COLORLS
172		if (f_color && color_printed)
173			endcolor(0);
174#endif
175		if (f_type)
176			(void)printtype(sp->st_mode);
177		if (S_ISLNK(sp->st_mode))
178			printlink(p);
179		(void)putchar('\n');
180	}
181}
182
183void
184printcol(dp)
185	DISPLAY *dp;
186{
187	extern int termwidth;
188	static FTSENT **array;
189	static int lastentries = -1;
190	FTSENT *p;
191	int base, chcnt, cnt, col, colwidth, num;
192	int endcol, numcols, numrows, row;
193	int tabwidth;
194
195	if (f_notabs)
196		tabwidth = 1;
197	else
198		tabwidth = 8;
199
200	/*
201	 * Have to do random access in the linked list -- build a table
202	 * of pointers.
203	 */
204	if (dp->entries > lastentries) {
205		lastentries = dp->entries;
206		if ((array =
207		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
208			warn(NULL);
209			printscol(dp);
210		}
211	}
212	for (p = dp->list, num = 0; p; p = p->fts_link)
213		if (p->fts_number != NO_PRINT)
214			array[num++] = p;
215
216	colwidth = dp->maxlen;
217	if (f_inode)
218		colwidth += dp->s_inode + 1;
219	if (f_size)
220		colwidth += dp->s_block + 1;
221	if (f_type)
222		colwidth += 1;
223
224	colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
225	if (termwidth < 2 * colwidth) {
226		printscol(dp);
227		return;
228	}
229
230	numcols = termwidth / colwidth;
231	numrows = num / numcols;
232	if (num % numcols)
233		++numrows;
234
235	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
236		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
237	for (row = 0; row < numrows; ++row) {
238		endcol = colwidth;
239		for (base = row, chcnt = col = 0; col < numcols; ++col) {
240			chcnt += printaname(array[base], dp->s_inode,
241			    dp->s_block);
242			if ((base += numrows) >= num)
243				break;
244			while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
245			    <= endcol){
246				(void)putchar(f_notabs ? ' ' : '\t');
247				chcnt = cnt;
248			}
249			endcol += colwidth;
250		}
251		(void)putchar('\n');
252	}
253}
254
255/*
256 * print [inode] [size] name
257 * return # of characters printed, no trailing characters.
258 */
259static int
260printaname(p, inodefield, sizefield)
261	FTSENT *p;
262	u_long sizefield, inodefield;
263{
264	struct stat *sp;
265	int chcnt;
266#ifdef COLORLS
267	int color_printed = 0;
268#endif
269
270	sp = p->fts_statp;
271	chcnt = 0;
272	if (f_inode)
273		chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino);
274	if (f_size)
275		chcnt += printf("%*qd ",
276		    (int)sizefield, howmany(sp->st_blocks, blocksize));
277#ifdef COLORLS
278	if (f_color)
279		color_printed = colortype(sp->st_mode);
280#endif
281	chcnt += (f_octal || f_octal_escape) ? prn_octal(p->fts_name)
282	                                     : printf("%s", p->fts_name);
283#ifdef COLORLS
284	if (f_color && color_printed)
285		endcolor(0);
286#endif
287	if (f_type)
288		chcnt += printtype(sp->st_mode);
289	return (chcnt);
290}
291
292static void
293printtime(ftime)
294	time_t ftime;
295{
296	int i;
297	char longstring[80];
298	static time_t now;
299
300	if (now == 0)
301		now = time(NULL);
302
303	strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
304	for (i = 4; i < 11; ++i)
305		(void)putchar(longstring[i]);
306
307#define	SIXMONTHS	((365 / 2) * 86400)
308	if (f_sectime)
309		for (i = 11; i < 24; i++)
310			(void)putchar(longstring[i]);
311	else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
312		for (i = 11; i < 16; ++i)
313			(void)putchar(longstring[i]);
314	else {
315		(void)putchar(' ');
316		for (i = 20; i < 24; ++i)
317			(void)putchar(longstring[i]);
318	}
319	(void)putchar(' ');
320}
321
322static int
323printtype(mode)
324	u_int mode;
325{
326	switch (mode & S_IFMT) {
327	case S_IFDIR:
328		(void)putchar('/');
329		return (1);
330	case S_IFIFO:
331		(void)putchar('|');
332		return (1);
333	case S_IFLNK:
334		(void)putchar('@');
335		return (1);
336	case S_IFSOCK:
337		(void)putchar('=');
338		return (1);
339	case S_IFWHT:
340		(void)putchar('%');
341		return (1);
342	}
343	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
344		(void)putchar('*');
345		return (1);
346	}
347	return (0);
348}
349
350#ifdef COLORLS
351static int
352putch(c)
353	int c;
354{
355	(void) putchar(c);
356	return 0;
357}
358
359static int
360writech(c)
361	int c;
362{
363	char tmp = c;
364
365	(void) write(STDOUT_FILENO, &tmp, 1);
366	return 0;
367}
368
369static void
370printcolor(c)
371       Colors c;
372{
373	char *ansiseq;
374
375	if (colors[c][0] != -1) {
376		ansiseq = tgoto(ansi_fgcol, 0, colors[c][0]);
377		if (ansiseq)
378			tputs(ansiseq, 1, putch);
379	}
380
381	if (colors[c][1] != -1) {
382		ansiseq = tgoto(ansi_bgcol, 0, colors[c][1]);
383		if (ansiseq)
384			tputs(ansiseq, 1, putch);
385	}
386}
387
388static void
389endcolor(sig)
390	int sig;
391{
392	tputs(ansi_coloff, 1, sig ? writech : putch);
393}
394
395static int
396colortype(mode)
397       mode_t mode;
398{
399	switch(mode & S_IFMT) {
400	      case S_IFDIR:
401		if (mode & S_IWOTH)
402		    if (mode & S_ISTXT)
403			printcolor(C_WSDIR);
404		    else
405			printcolor(C_WDIR);
406		else
407		    printcolor(C_DIR);
408		return(1);
409	      case S_IFLNK:
410		printcolor(C_LNK);
411		return(1);
412	      case S_IFSOCK:
413		printcolor(C_SOCK);
414		return(1);
415	      case S_IFIFO:
416		printcolor(C_FIFO);
417		return(1);
418	      case S_IFBLK:
419		printcolor(C_BLK);
420		return(1);
421	      case S_IFCHR:
422		printcolor(C_CHR);
423		return(1);
424	}
425	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
426		if (mode & S_ISUID)
427		    printcolor(C_SUID);
428		else if (mode & S_ISGID)
429		    printcolor(C_SGID);
430		else
431		    printcolor(C_EXEC);
432		return(1);
433	}
434	return(0);
435}
436
437void
438parsecolors(cs)
439char *cs;
440{
441	int i, j, len;
442	char c[2];
443
444	if (cs == NULL)    cs = ""; /* LSCOLORS not set */
445	len = strlen(cs);
446	for (i = 0 ; i < C_NUMCOLORS ; i++) {
447		if (len <= 2*i) {
448			c[0] = defcolors[2*i];
449			c[1] = defcolors[2*i+1];
450		}
451		else {
452			c[0] = cs[2*i];
453			c[1] = cs[2*i+1];
454		}
455		for (j = 0 ; j < 2 ; j++) {
456			if ((c[j] < '0' || c[j] > '7') &&
457			    tolower((unsigned char)c[j]) != 'x') {
458				fprintf(stderr,
459					"error: invalid character '%c' in LSCOLORS env var\n",
460					c[j]);
461				c[j] = defcolors[2*i+j];
462			}
463			if (tolower((unsigned char)c[j]) == 'x')
464			    colors[i][j] = -1;
465			else
466			    colors[i][j] = c[j]-'0';
467		}
468	}
469}
470
471void
472colorquit(sig)
473	int sig;
474{
475	endcolor(sig);
476
477	(void) signal(sig, SIG_DFL);
478	(void) kill(getpid(), sig);
479}
480#endif /*COLORLS*/
481
482static void
483printlink(p)
484	FTSENT *p;
485{
486	int lnklen;
487	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
488
489	if (p->fts_level == FTS_ROOTLEVEL)
490		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
491	else
492		(void)snprintf(name, sizeof(name),
493		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
494	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
495		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
496		return;
497	}
498	path[lnklen] = '\0';
499	if (f_octal || f_octal_escape) {
500	        (void)printf(" -> ");
501	        (void)prn_octal(path);
502	}
503	else (void)printf(" -> %s", path);
504}
505